Hi James, thank you for reaching out. Our apologies, but we do not sell the hardware required for these parts. If you can't reuse the old ones, you can easily get them from a dealer. You can use the link below to order the arms while they are still on sale. Have a good one. https://www.turnto.com/moderation/itemUrlProxy?siteId=1556&itemId=1236271&lang=en_US?can=cpab2020

I used my old bolts and hardware.

Hi Rich, I'm glad to assist you. No, these rear upper control arms are for the ones with auto-level controls. The matching part number is SET-REPG281519-2. This, however, is currently out of stock now. Please click on the "Notify me when available" button and enter your email address to be notified when items will be available. Click the link below once the part becomes available later on. I hope this helps. Happy shopping. https://www.carparts.com/details/Chevrolet/Trailblazer/TrueDrive/Control_Arm/2004/LS/6_Cyl_4-dot-2L/SET-REPG281519-2.html?can=CPJE1043_20220314

Hi Tony, Unfortunately, we do not have that data readily available. This pair of upper rear control arms is a direct fit and specifically designed only for the selected vehicle application only-2002 to 2004/2006 Chevy/GMC/Oldsmobile Trailblazer/Bravada, for Models With Auto Level Control. From our homepage, please select your year, make model, submodel and engine size, then click search. Type the name of the part on top where the search box is located. Once the part shows up, that would be a direct fit part and it will be exactly compatible. The length is not noted anymore since you have to accurately selected your vehicle application and the resulting search would show the exact parts designed for that vehicle only.